Furnace for the preparation of artificial fuel.



.eaoom FURNACE FOR THE PREPARATION ARTIFICIAL FUEL,

APPLICATION FILED APR. 24, 916.

Patented June 13, 1916.

' VINCENT GROOM, or. LoimoN. ENGLAND.

FURNACE FOR THE PREPARATION OF ARTIFICIAL FUEL.

Specification of Letters Patent.

Patented June 1a, 1916.

Applicatibn filed April 24, 1916. Serial No. 93,301.

T 0 all whom it may concern Be it known 'that I, VINCENT GROOM, a subject of the King of Great Britain, residing at 392 Kennington road, London, S. E., England, have inventednew and useful Improvements in and Relating to Furnaces for the Preparation of Artificial Fuel or the like, of which the following isa specificatlon.

i In the manufacture of artificial fuel, whatever the process employed may be, great difliculties are always encountered in the coking of the mixed materials when formed into shape as briquettes or the like. In coking furnaces employed for coking the fuel mixture, it has been proved in practice that the charge of fuel mixture subjected to the coking operation is not heated in a uniform JDZIIIIIEI, and consequently there are, between by way of example, a furnace provided according to the present invention. 1

Figure 1 is a horizontal section of the oven which is shown in vertical section in Fig. 2, this vertical section being taken partly along the line AB and partly along the line C-D of Fig. 1. Fig. 3 is a view of the receptacle in which the material to be heatedis placed.-

As will be seen from Figs. 1 and 2, the furnace consists of a chamber 12 inclosing a number of heating units 13. Each heating unit 13 is independent of the rest and consists of a series of heating chambers 2 provided above combustion chambers 1, the heating chambers communicating by means of. apertures 10 in their inner walls 9 with a central fine 3. This flu 3 communicatesby means of apertures 14 with the combustion chambers 1, so that the volatile matters given off from the-substances treated are utilized to maintain the fires in the combustion chambers.

The heating units are surrounded by passages 4 and the combustion chambers 1 communicate with these passages by means of apertures 11 Thus the products of combustion pass out from the combustion chambers into the passages 4 and circulateover and around the heating units before their exit to the chimney of the furnace in the direction of the arrow 5. 'A central flue 15 between the lines 3 affords a passage for the hot gases of combustion from top to bottom of the chamber l2 bet-ween the series of heating chambers 2.

The natural draft of the chimney drawing the excess of volatile substances through the titles 3 and the products of combustion through the passages 4 may be increased by the use of a fan if desired or. thought necessary.

In each of the heating chambers 2'is inclosed a receptacle 6, the sides and bottoms of which are perforated by, apertures 7 (see Fig. 3), which apertures allow of a regular distribution ofthe heat through the mass of ovoids to be coked.

' The sides and bottoms of 6 may instead of being plain, to give a still more uniform circulation of the receptacles .air over them, and avoid the use of sup-' ports or pedestals-which are necessary when employing receptacles with plain or flat bottoms.

The back and front walls of the furnace are formed by a metallic casing 8 in' which doors are provided, allowing of access to the heatingchambers 2. This arrangement allows of coking the fuel very quickly and consequently of reducing to a considerable extent the amount and duration of heating necessary to drive off the excess of volatile constituents.

I claimi 1. A furnace for coking or carbonizing combustible substances, comprising in combination a plurality of independentheating units, each separated from the inner walls of the furnace and from its neighboring unit by passages for conveying the products of combustion from said units to a single main exit flue, and each unit consisting of a combustion chamber or chambers, a'series of heating chambers heated by the latter, a flue common to said series providing communi' cation between the heating chambers and the combustion chamber or chambers, and means of communication between said-heating units and the passages aforesaid, together with incombustible receptacles for holding the material to be treated.

2. A coking furnace includlng a main chamber, a plurality ofheating units arrangml in spaced pax'auei relation with each othexg, em} spaced from the 'inner Walls of the mainchambcr to provide fiues,-supe1- posed 11 nting" chnmbevs in. each of the heating uni'lis, means for providing communicatien between the beefing units, and a fuel receptacle in. each heating ch amber.

3, A coking furnace including a main dumber, a plurality of heating units arranged in he main chamber, superposed heating chambers in each of the heating units, meunsfor previdmg communicnuun between the heating units a heating chew her formed in each heating unit, and n, receyr mole in each heating chamber, said recap tecles having their side walls and bottom perio 'uted.

VlNC/ENT GROOM.

' Witnesses:

MmeUi-mi'ri. Q. Rownm', GEORGE HAM. 

